Adjusting means for stationary jaws of duplex crushers



1949 R. H. WATERS 2,487,744

ADJUSTING MEANS FOR STATIONARY JAWS OF DUPLEX CRUSHERS Filed Aug. 20,1946 3 Sheets-Sheet l ROSCOE H. WA TE}? 5', INVENTOR.

ATTD RN EYB Nov. 8, 1949 R. H. WATERS ADJUSTING MEANS FOR STATIONARYJAWS OF DUPLEX CRUSHERS I5 Sheets-Sheet 3 Filed Aug. 20, 1946 IEOSCOEMWA 75/25, INVENTOR.

Patented Nov. 8, 1949 UNITED STATES OFFI CE ADJUSTING .MEANS FORSTATIONARY JAWS F 'DUPLEX .CRUSHERS LOlaim. 1

My present invention relates to an improved adjusting means forstationary jaw of duplex .mfusher of the type adaptable for crushingrock .or stone and having a pair of relatively stationary jaws, with apair of pivotally mounted center jaws swung simultaneously on theirpivots by an eccentric shaft rotating therebetween.

In the accompanyin drawings I have illustrated one complete example ofthe physical embodiment of my invention according to the best mode Ihave thus far devised but it will be understood that various changes andalterations may be made in the exemplified structure within the scope ofthe appended claim.

In the drawings:

Figure 1 is a longitudinal vertical sectional view of the crusher of myinvention.

Figure 2 is a partial horizontal sectional view showing the adjustmentmeans for the stationary Jaws.

Figure 3 is a transverse vertical sectional view at line 3-3 of Figure1.

Figure 4 is a transverse vertical sectional view at line 4-4 of Figure1.

Figure 5 is a perspective View of the eccentric shaft.

Figure 6 is a transverse sectional view at line 6-4; of Figure 1.

Figure 7 is a perspective view of the adjustment toggle.

Figure 8 is a perspective view of the yoke for the stationary jaws.

Referring now to the drawings, I have illustrated the crusher of myinvention embodying a frame 2 having vertical side walls 4 convergingupwardly at 6 and having a depending flange 8. A center cover I0 isfashioned with downwardly diverging walls l2 forming the two spacedhoppers I4 and It.

The center crusher jaws l8 are pivotally secured in the frame upon therods 20 and in the crushing faces of the jaws I employ wear plates 22secured therein by retaining strips 23 and bolts 24. The lower edges ofthe retaining strips v 2 the inner faces of the jaws 18 by bolts 4'2 andthe stay'bars 44 secure the walls of the frame-against displacementunder pressure.

'The fixed jaws of the crusher are illustrated at 46 supported upon therods '48 and these jaws are also fashioned with wear plates 58 securedby retaining strips 52 and bolts 54 and. the lower joint of the platesand the jaws are dovetailed as at 56.

The outer faces of the stationary jaws are formed with lugs 58 toreceive and secure the rods 60 by means of the yoke 6| at one end whilethe other ends are resiliently affixed to the walls 6 by springs 62 andnuts 64.

Adjustment of the stationary plates with relation to the pivoted jaws isaccomplished through the spring plates 66 in a groove 61 of thestationary jaws 46 and against the abutment 68 resting on the frame 2,the collars 18 attached to bolts 12 having squared ends 14 and disposedwithin the sleeves Hi the bolts and collars 10 being in threadedengagement. The sleeve 16 is provided at its inner end with the annularflange which is secured to the collar 70. The bolt 12 having theenlarged head 'Hil which provides a swivel connection between theabutment 68 and the bolt 16. The outer end of the sleeve 16 abutting theside walls 4 of the crusher.

Thus by rotating the squared ends of the bolts, the jaws may be movedoutwardly or inwardly with relation to the jaws IE to predetermine thespace therebetween in the crushing operation.

From the above description of the structure of my invention it will beapparent that the rotation of the main shaft and the eccentric from thewheel W will simultaneously swing the jaws 18 on their pivots tointermittently crush the rock or stone in the hoppers between the jawsl8 and the jaws 46.

Obviously the friction plates, and the wear plates may be replacedbecause of being worn or because of the desire to change the outer faceof the jaws I8 under different crushing conditions.

The crusher of my invention is simple in construction and operation, andis durable under stress of operation, and I have found that lubricantnecessary for the operation of such a machine may be sealed in the mainshaft journals, the other parts requiring little or no attention.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent is:

In the adjusting means for the stationary jaw of a duplex crusher havinga frame and a pair of stationary jaws supported by a said frame, and a 3pair of centrally disposed pressure jaw elements pivotally supported bysaid frame and said jaw elements being adapted for movement toward andaway from said stationary jaws, the improvement comprising resilientsupports for each stationary jaw, each support comprising an abutmentmounted for horizontal slidable movement on said frame, a spring platebearing against the outer surface'of each stationary jaw and supportedat its opposite end in said abutment, horizontally disposed adjustingmeans coacting with said abutment for the movement thereof, said meanscomprising a threaded collar slidably and nonrotatably fixed on saidframe, a bolt threaded at one end and engaging in said collar and havinga swivel connection with said abutment, a sleeve fixed at one end tosaid collar in horizontal relation thereto and abutting the crusherframe at its opposite end, and said bolt being rotatably mounted withclearance in said sleeve for the guiding of said bolt, the outer end ofthe bolt passing with clearance through the frame and being providedwith a square shaped end for the reception of a similarly shaped toolfor the movement of said bolt whereby said abutment may be adjusted withrelation to said collar and said spring plate may resiliently support ajaw with relation to said abutment.

ROSCOE H. WATERS.

REFERENCES CITED The following references are of record in the file ofthis patent:

V UNITED STATES PATENTS Number Name Date 121,143 Peterwood Nov. 21, 1871707,385 Calkins Aug. 19, 1902 1,997,214 Guest Apr. 9, 1935 2,009,186Peterson July 23, 1935 2,028,643 Bakstad Jan. 21, 1936 2,235,097 BensonMar. 18, 1941 FOREIGN PATENTS Number Country Date 19,953 Great Britainof 1906 52,437 Denmark Dec. 14, 1936 721,266 France Dec. 12, 1931780,253 France Jan. 29, 1935 823,144 France Oct. 11, 1937 65,783 GermanyNov. 25, 1892

